JP5128527B2 - Suction board - Google Patents

Description

  The present invention relates to a suction disk provided with a gel layer.

  The suction disk provided with the gel layer on the suction disk main body has a high suction power and can be absorbed even on an uneven surface. Conventionally, the suction cup body of such a suction cup places importance on bonding to the adherend surface, and soft plastics and elastomers have been used. However, the suction force is reduced due to plastic deformation due to heat and changes over time. There was a problem. Some have a mechanism for forcibly pulling up the central portion of the suction disk to prevent such a decrease in the suction force, but the configuration becomes complicated and the cost is increased. Therefore, in Reference 1, an adsorption disk using a thermoplastic polyurethane elastomer that hardly changes with time is proposed for the adsorption disk body. Further, Document 2 proposes a suction disk that maintains the suction force by the elastic force of a spring body provided in the suction disk body (the one provided with a gel layer is described in FIG. 10).

JP 2008-228918 A JP 2008-51296 A

  However, when the suction disk of the invention of Document 1 or Document 2 is pressed against the adherend surface, the outer peripheral portion of the gel layer first comes into contact with the adherend surface, and the pressing force acts on this contact portion to cause the gel layer to adhere to the adherend surface. Since the air in the central part is not discharged to the outer peripheral side and remains inside the suction plate, the contact area between the gel layer and the adherend surface is reduced, resulting in a decrease in the suction force. was there.

  The present invention has been made in view of the above circumstances, and an object thereof is to provide a suction disk that can maintain a high suction force with a simple configuration.

The invention of claim 1 of the present invention comprises a substantially disk-shaped suction disk main body made of a material having spring elasticity, and a gel layer integrally coupled to the suction disk main body. A rib is formed on a peripheral portion of the side surface, a gel layer is provided on an inner peripheral side of the rib, an outer peripheral portion of the gel layer is thicker than a height of the rib, and the gel layer The surface of is characterized in that the central part is recessed with respect to the outer peripheral part. Here, the material having spring elasticity is hard plastic and has creep deformation characteristics unlike materials having elasticity that are greatly deformed, such as soft plastics and elastomers, which are used in conventional suction disks.・ Shows materials with excellent creep rupture properties. In general, a hard plastic means one having a flexural modulus of 7000 kg / cm ² or more in a steady state.

  A second aspect of the present invention is characterized in that a shaft portion is provided at the center of the other surface of the suction disk main body, and an engagement portion is provided on the shaft portion. . Here, the engaging portion is for engaging the engaged body, and has the shape and structure of the engaged body such as a male screw portion, a female screw portion, a through hole, a closing hole, a groove, a notch, and a claw. You can choose freely. Furthermore, the object to be engaged may be an object itself that is fixedly supported by the suction disk such as various instruments, or may be an element for supporting the object such as a screw, a hook, a ring, or a rod. Good.

  According to a third aspect of the present invention, the removal tool is provided on the outer peripheral end of the suction disk main body via a connecting portion, and the removal tool projects to one side, and the suction And a force point portion extending in a direction opposite to the center of the board body.

  According to a fourth aspect of the present invention, the suction disk main body is made of a thermoplastic polyamide resin, the gel layer is made of urethane gel, and the bonding surface of the suction disk main body with the gel layer is uneven. The amide group which thermoplastic polyamide resin has, and the isocyanate group which urethane gel has couple | bonded are characterized by the above-mentioned.

  According to the invention of the first aspect of the present invention, the gel layer is provided, the adsorptive power is high, and it can be adsorbed even on an uneven adherend surface. When the suction disk is pressed against the adherend surface, the outer peripheral portion of the gel layer is first in contact with the adherend surface, and then the tip of the rib is in contact with the adherend surface. When further pressed, the suction cup body warps in a bowl shape with the tip of the rib as a fulcrum, and the central portion of the gel layer approaches the adherend surface and pushes air to the outer peripheral side. At this time, the pressing force is applied to the ribs, and the force is not applied directly to the gel layer. Therefore, the gel layer is not pressure-bonded to the adherend surface, and air is easily discharged. Touch. When the pressing force is removed, the suction cup body that has warped in a bowl-like shape tries to return to its original shape, and the force that pulls up the central part of the suction cup body works continuously, so a higher suction force is maintained. The

  According to the invention of the second aspect of the present invention, since the shaft portion can be picked and the suction disk can be pressed against the adherend surface, workability is good. An engaging portion for engaging the engaged body is formed on the shaft portion, but since the main body of the suction plate is made of a hard material, the suction plate can be formed by attaching a screw portion. In addition, the engaged body can be supported upward on the basis of the suction disk.

  According to the third aspect of the present invention, when the suction plate is peeled off from the adherend surface, if the force point portion is pressed against the adherend surface side, the force point portion becomes the force point, and the fulcrum portion becomes the fulcrum. The part becomes an action point, and one end of the suction disk main body is raised by the lever principle and can be easily peeled off. Since this suction disk has a high suction power, and the suction disk body is made of a hard material, it is difficult to grip and peel off one end of the suction disk like conventional products. It is desirable to provide.

  According to invention of Claim 4 among this invention, the thermoplastic polyamide resin which comprises an adsorption | suction board | substrate main body is hard and has elasticity, a mechanical characteristic is favorable, and durability is also high. Moreover, the urethane gel which comprises a gel layer cannot change easily with time, and can maintain high adsorption power. Furthermore, since the unevenness is formed on the bonding surface of the suction disk main body with the gel layer, the bonding area between the suction disk main body and the gel layer is large, and the amide group and gel layer of the thermoplastic polyamide resin constituting the suction disk main body are formed. Since the isocyanate group of the urethane gel to be formed is intermolecularly bonded by hydrogen bonding or the like, the adsorption disk main body and the gel layer are securely bonded, and the gel layer is not peeled off from the adsorption disk main body.

(A) is a top view of the suction disk of this invention, (b) is the sectional view on the AA line of (a). (A) is an explanatory view when the suction disk is brought into contact with the adherend surface, (b) is an illustration when the suction disk is pressed against the adherend surface, and (c) is an explanatory view when the suction disk is peeled off from the adherend surface.

  A specific configuration of the suction disk of the present invention will be described based on each drawing. As shown in FIG. 1, the present suction disk includes a substantially disk-shaped suction disk main body 1 and a gel layer 2 integrally coupled to the suction disk main body 1. A rib 3 is formed circumferentially on the peripheral edge of one surface of the suction disk main body 1, and a gel layer 2 is provided on the inner peripheral side of the rib 3. The gel layer 2 is formed so that the outer peripheral portion 21 is thicker than the height of the rib 3 and gradually becomes thinner toward the inner peripheral side, and the depression 22 is formed at the center of the surface of the gel layer 2. Yes.

  At the center of the surface opposite to the surface on which the gel layer 2 of the suction cup body 1 is provided, a cylindrical shaft portion 4 is provided so as to be coaxial with the suction cup body 1. The shaft portion 4 is formed integrally with the suction cup body 1, has a female screw formed in the axial direction thereof to form a screw portion 51, and a through-hole 52 having a circular cross section is formed in a direction orthogonal to the axial direction. Thus, the screw portion 51 and the through hole 52 communicate with each other, and both constitute the engaging portion 5.

  A removal tool 6 is provided at the outer peripheral end of the suction disk main body 1. The removal tool 6 includes a semicircular arc-shaped fulcrum portion 61 that protrudes toward the surface on which the gel layer 2 is provided, and a force point portion 62 that extends in a direction opposite to the center of the suction disk main body 1. And is formed integrally with the suction disk main body 1. The connecting portion 7 is thin and bendable.

  In addition, the suction disk main body 1 and the rib 3, the shaft part 4, the removal tool 6, and the connecting part 7 integrated with the suction disk main body 1 are made of thermoplastic polyamide resin, and the gel layer 2 is made of urethane gel. The suction disk main body 1 and the gel layer 2 are bonded by mechanical bonding and chemical bonding. That is, the mechanical bond indicates that the bonding area is increased by forming irregularities (not shown) on the bonding surface 11 of the suction disk body 1 with the gel layer 2 and increasing the surface area. The bond refers to an intermolecular bond such as a hydrogen bond between an amide group (NHCO) possessed by polyamide and an isocyanate group (NCO) possessed by urethane.

  Next, the case where this suction disk is made to adsorb | suck to an adherend surface is demonstrated. When the suction cup body 1 is brought close to the adherend surface G by gripping the shaft portion 4, the outer peripheral portion 21 of the gel layer 2 first comes into contact with the adherend surface G (FIG. 2 (a)). Further, when the shaft portion 4 is pressed in the direction of the adherend surface G (pressing force P1), the tip of the rib 3 comes into contact with the adherend surface G, and the suction cup body 1 warps in a bowl shape with the tip of the rib 3 as a fulcrum ( 2 (b)), the central portion of the gel layer 2 approaches the adherend surface G, and the air in the depression 22 is pushed out to the outer peripheral side (air flow F). At this time, the pressing force P1 is applied to the rib 3, and no force is applied directly to the gel layer 2. Therefore, the gel layer 2 is not pressure-bonded to the adherend surface G, and air is easily discharged. The entire surface is in contact with the adherend surface G. In addition, about the removal tool 6, since the connection part 7 bends freely, it does not become a hindrance at the time of pressing the suction disk main body 1 against the adherend surface G. Then, if the suction force P1 is removed except for the pressing force P1, the force S in the direction of pulling up the central portion of the suction plate main body 1 continues to work as the suction plate main body 1 that has warped in a bowl shape returns to its original shape. Is maintained.

  Next, the case where the present suction disk is peeled off from the adherend surface will be described. This suction disk has a high suction force, and the suction disk body 1 is made of a hard material, so that it is difficult to grip and peel off one end of the suction disk like a conventional product. Therefore, when the suction disk is peeled off from the adherend surface G, if the force point portion 62 of the removal tool 6 is pressed against the adherend surface G side (pressing force P2), the force point portion 62 is the force point and the fulcrum portion 61 is the fulcrum. The connection portion 7 serves as an action point, and one end of the suction cup body 1 is raised with a small force by the lever principle, and can be easily peeled off (FIG. 2C). In addition, even if it peels in this way, the adsorption | suction power of the gel layer 2 does not fall, but it can be used repeatedly.

  The suction disk of the present invention configured as described above has a gel layer and has a particularly high suction force by maintaining the suction power by providing a rib on the suction disk body. Moreover, since the removal tool is provided, it is easy to peel off from the adherend surface. Furthermore, since the screw part and the through hole are provided as the engaging part, for example, the object to be fixed and supported is directly screwed to the screw part, the hook or ring is attached to the through hole, It can be used in various ways, such as using a towel hook by screwing it into the through hole.

  The present invention is not limited to the above embodiment. The material of the suction disk main body may be any material that is hard plastic and has excellent creep characteristics, and may be various engineering plastics. Also, the gel layer may be made of other materials as long as it has an adsorption performance equivalent to that of urethane gel. The rib does not have to be formed over the entire circumference, but may have a notch in the middle or may be formed in a dotted shape. Alternatively, the suction disk main body may be formed in a bowl shape, a gel layer having a constant thickness may be provided on the concave side, and a depression may be formed in the central portion. The shape of the shaft portion may be a cylindrical shape, and may be a cross-sectional ellipse or a polygon. The shape of the through hole may be a cross-sectional circle or a cross-sectional ellipse or a polygon. Furthermore, the configuration of the engaging portion can be freely selected according to the shape and structure of the engaged body, such as a male screw portion, a closing hole, a groove, a notch, and a claw, in addition to the female screw portion and the through hole. Moreover, the removal tool may be attached to the suction cup body through a hinge or the like, or a separate one may be attached.

DESCRIPTION OF SYMBOLS 1 Suction board main body 2 Gel layer 3 Rib 4 Shaft part 5 Engagement part 6 Detachment tool 7 Connection part 11 Joining surface 21 Outer peripheral part 61 Supporting part 62 Force point part

Claims (4)

  A substantially disk-shaped suction disk main body (1) made of a material having spring elasticity; and a gel layer (2) integrally coupled to the suction disk main body (1), wherein the suction disk main body (1) A rib (3) is formed on the peripheral edge of the one side surface, a gel layer (2) is provided on the inner peripheral side of the rib (3), and an outer peripheral portion (21) of the gel layer (2). Is a thicker than the height of the rib (3), and the surface of the gel layer (2) is depressed at the center with respect to the outer peripheral portion (21).   A shaft portion (4) is provided at the center of the other surface of the suction disk main body (1), and an engagement portion (5) is provided on the shaft portion (4). The suction disk according to claim 1.   A removal tool (6) is provided on the outer peripheral end of the suction disk main body (1) via a connecting part (7), and the removal tool (6) is a fulcrum part (61) protruding to one side. And a force point portion (62) extending in a direction opposite to the center of the suction disk body (1).   The adsorption board body (1) is made of a thermoplastic polyamide resin, the gel layer (2) is made of urethane gel, and the bonding surface (11) of the adsorption board body (1) with the gel layer (2) 4. The adsorbing plate according to claim 1, 2 or 3, wherein the amide group of the thermoplastic polyamide resin and the isocyanate group of the urethane gel are bonded to each other.

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